University of Bahrain Aptitude Test (UOB Aptitude) · Mathematics Reasoning

Percentages, ratios and averages

41 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 41 questions

  1. A price of 200 is increased by 30% and the new price is then reduced by 10%. What is the final price?
  2. A jacket costs 240 dinars. It is sold at a 40% discount. What is the sale price in dinars?
  3. 132 marbles are divided between two children in the ratio 4:7. How many marbles does the child with the larger share get?
  4. A student's scores on 5 tests are 75, 90, 75, 80, 90. What score is needed on the next test for an average of 75 over all 6 tests?
  5. 4 liters of a 10% salt solution are mixed with 6 liters of a 40% salt solution. What is the salt concentration of the mixture?
  6. 2000 dinars are invested for 2 years at 20% compound interest per year. What is the amount after 2 years?
  7. A bacteria colony of 100 cells doubles every 3 hours. How many cells are there after 9 hours?
  8. A price of 150 is decreased by 40% and the new price is then reduced by 50%. What is the final price?
  9. A jacket costs 240 dinars. It is sold at a 25% discount. What is the sale price in dinars?
  10. 48 marbles are divided between two children in the ratio 3:5. How many marbles does the child with the larger share get?
  11. 5000 dinars are invested for 2 years at 10% compound interest per year. What is the amount after 2 years?
  12. A bacteria colony of 200 cells doubles every 3 hours. How many cells are there after 12 hours?
  13. A price of 80 is decreased by 50% and the new price is then reduced by 20%. What is the final price?
  14. A jacket costs 300 dinars. It is sold at a 20% discount. What is the sale price in dinars?
  15. 63 marbles are divided between two children in the ratio 2:5. How many marbles does the child with the larger share get?
  16. A student's scores on 5 tests are 90, 60, 90, 80, 60. What score is needed on the next test for an average of 80 over all 6 tests?
  17. 2000 dinars are invested for 2 years at 10% compound interest per year. What is the amount after 2 years?
  18. A bacteria colony of 100 cells doubles every 2 hours. How many cells are there after 6 hours?
  19. A price of 400 is increased by 40% and the new price is then reduced by 50%. What is the final price?
  20. A jacket costs 150 dinars. It is sold at a 30% discount. What is the sale price in dinars?
  21. 28 marbles are divided between two children in the ratio 2:5. How many marbles does the child with the larger share get?
  22. 6 liters of a 15% salt solution are mixed with 4 liters of a 25% salt solution. What is the salt concentration of the mixture?
  23. 1000 dinars are invested for 2 years at 10% compound interest per year. What is the amount after 2 years?
  24. A price of 250 is increased by 20% and the new price is then reduced by 10%. What is the final price?
  25. A jacket costs 60 dinars. It is sold at a 25% discount. What is the sale price in dinars?
  26. 42 marbles are divided between two children in the ratio 3:4. How many marbles does the child with the larger share get?
  27. A student's scores on 5 tests are 90, 75, 90, 80, 90. What score is needed on the next test for an average of 80 over all 6 tests?
  28. 6 liters of a 20% salt solution are mixed with 4 liters of a 40% salt solution. What is the salt concentration of the mixture?
  29. A price of 400 is decreased by 25% and the new price is then reduced by 20%. What is the final price?
  30. 20 marbles are divided between two children in the ratio 1:4. How many marbles does the child with the larger share get?
  31. A bacteria colony of 500 cells doubles every 3 hours. How many cells are there after 12 hours?
  32. A price of 400 is decreased by 20% and the new price is then reduced by 10%. What is the final price?
  33. A jacket costs 240 dinars. It is sold at a 15% discount. What is the sale price in dinars?
  34. 40 marbles are divided between two children in the ratio 1:4. How many marbles does the child with the larger share get?
  35. 3 liters of a 20% salt solution are mixed with 2 liters of a 40% salt solution. What is the salt concentration of the mixture?
  36. A bacteria colony of 500 cells doubles every 3 hours. How many cells are there after 9 hours?
  37. A price of 150 is decreased by 50% and the new price is then reduced by 20%. What is the final price?
  38. A jacket costs 240 dinars. It is sold at a 10% discount. What is the sale price in dinars?
  39. 25 marbles are divided between two children in the ratio 2:3. How many marbles does the child with the larger share get?
  40. A student's scores on 4 tests are 90, 90, 65, 70. What score is needed on the next test for an average of 80 over all 5 tests?
  41. 3 liters of a 10% salt solution are mixed with 2 liters of a 20% salt solution. What is the salt concentration of the mixture?

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